Oil fragrance is a traditional food of Hui nationality, which is fragrant but not greasy, soft and delicious. Fried noodles consist of four kinds of noodles. The reason why these four kinds of noodles are mixed together is because each kind of noodles has different functions. The first kind of dough is fermented, the second kind is scalded with boiling water of 80-90 degrees, and the third kind is made by adding flour and sugar into 70% hot oil and stirring. The last kind of dead noodles is the mixture of warm water and four kinds of noodles, which can not only make the cake fluffy and soft.